The whole spectrum had slowly been moving to the left, both republicans and dems. As an example JFK would've been kicked out of the DNC by the '80 election because of his tax cuts and pro military stance, among other things. But in the last 10 years the left has made a quantum jump to socialism. About half the RNC is in its normal two steps behind the dems, the other half of the RNC is still closer to Reagan. That's why there is strife in the RNC right now. At this point the DNC is full socialist, which is what Obama ment when he said he was going to fundamentally transform the country, and the socialist DNC run press went right along with him.
This is also why there are people in the RNC that are trying just as hard as the DNC in this coup attempt against Trump. Trump is no conservative, but he's far closer to being one than most in the RNC right now. Hes the only one since Reagan that will truly clean the swamp, it would be happening quicker if there weren't so many in the RNC fighting him. Another part of the problem with Trump is he is not a politician, and does not play the politics game on the hill. But him not being a politician, and his pull no punches style are what got him elected. Trump is exactly what the founding fathers intended. Meaning he has already made a name for himself, which includes being financially secure, before running for a public office. Unlike what happens far too often these days where someone gets elected to office while barley making ends meet to being a multimillionaire by their second term in office while making less than $150K a year.